Current Alerts

Temperatures and psyllid abundance decrease

Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (3 fields) Gooding (1 field), and Power (1 field).

This week, we collected 50 psyllids from sticky cards (all from Intense sites).

Many of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in 19 of the remaining fields and found psyllids in 5 of these 19 fields (26.3%). However, we are waiting to receive cards from an additional 21 Light sites.

Thus far, all psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. However, with the increased trap captures during the last two weeks, some psyllids remain to be tested.

The dip in psyllid captures is almost certainly related to the cooler, rainy weather (in addition to the fact that fewer fields are still being monitored). Despite the rise in psyllid abundance during the previous 2-3 weeks, Lso incidence remains far lower than we’ve ever recorded for a season. Risk of ZC continues to appear relatively low as the season winds down.

We expect all of the remaining fields being monitored to undergo vine kill within the next two weeks.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

This week, we collected 243 psyllids from sticky cards (94 from Light sites and 149 from Intense sites).

Many of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in all 70 of the remaining fields and found psyllids in 30 of these 70 fields (42.8%).

This week we found 39 nymphs in leaf samples from one site in Canyon county.

Although psyllid abundance is rising, Lso incidence remains far lower than we’ve ever recorded for a season.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

This week, we collected 126 psyllids from sticky cards (70 from Light sites and 56 from Intense sites).

Many of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in all 67 of the remaining fields and found psyllids in 28 of these 67 fields (41.8%). However, we are still waiting to receive cards from 10 light sites.

This week we found 3 nymphs in leaf samples from Canyon county and 4 adults in vacuum samples from Gooding and Twin Falls counties. This is the first incidence of immature psyllids in our samples this year, which is not surprising at this point in the season.

All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.

The late-season rise in psyllid captures is consistent with the general pattern we’ve observed for the last five years. However, overall psyllid abundance is still only about 5-10% of what we saw last year at this time, and Lso incidence so far is lower than we’ve ever recorded for a season (1.33%).

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

This week, we collected 59 psyllids from sticky cards (39 from Light sites and 20 from Intense sites).

As the season winds down, some of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in all 88 of the remaining fields and found psyllids in 24 of these 88 fields (27.2%).

All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.

Typically we see a spike in psyllid abundance during late August to September, which may explain the uptick in psyllid numbers this week. However, overall psyllid abundance is still only about 5-10% of what we saw last year at this time.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

Temperatures and psyllid abundance decrease

Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (3 fields) Gooding (1 field), and Power (1 field).

This week, we collected 50 psyllids from sticky cards (all from Intense sites).

Many of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in 19 of the remaining fields and found psyllids in 5 of these 19 fields (26.3%). However, we are waiting to receive cards from an additional 21 Light sites.

Thus far, all psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip. However, with the increased trap captures during the last two weeks, some psyllids remain to be tested.

The dip in psyllid captures is almost certainly related to the cooler, rainy weather (in addition to the fact that fewer fields are still being monitored). Despite the rise in psyllid abundance during the previous 2-3 weeks, Lso incidence remains far lower than we’ve ever recorded for a season. Risk of ZC continues to appear relatively low as the season winds down.

We expect all of the remaining fields being monitored to undergo vine kill within the next two weeks.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

This week, we collected 243 psyllids from sticky cards (94 from Light sites and 149 from Intense sites).

Many of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in all 70 of the remaining fields and found psyllids in 30 of these 70 fields (42.8%).

This week we found 39 nymphs in leaf samples from one site in Canyon county.

Although psyllid abundance is rising, Lso incidence remains far lower than we’ve ever recorded for a season.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

This week, we collected 126 psyllids from sticky cards (70 from Light sites and 56 from Intense sites).

Many of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in all 67 of the remaining fields and found psyllids in 28 of these 67 fields (41.8%). However, we are still waiting to receive cards from 10 light sites.

This week we found 3 nymphs in leaf samples from Canyon county and 4 adults in vacuum samples from Gooding and Twin Falls counties. This is the first incidence of immature psyllids in our samples this year, which is not surprising at this point in the season.

All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.

The late-season rise in psyllid captures is consistent with the general pattern we’ve observed for the last five years. However, overall psyllid abundance is still only about 5-10% of what we saw last year at this time, and Lso incidence so far is lower than we’ve ever recorded for a season (1.33%).

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

This week, we collected 59 psyllids from sticky cards (39 from Light sites and 20 from Intense sites).

As the season winds down, some of the 95 fields that were in the monitoring program are being vine killed or harvested. We had traps deployed in all 88 of the remaining fields and found psyllids in 24 of these 88 fields (27.2%).

All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.

Typically we see a spike in psyllid abundance during late August to September, which may explain the uptick in psyllid numbers this week. However, overall psyllid abundance is still only about 5-10% of what we saw last year at this time.

More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.

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